Content Provider
Doria (National Library of Finland)
11
University of Tartu: Dspace
4
e-rara.ch (ETH Zürich)
4
DataCite Metadata Store (German National Library of Science and Technology)
2
Staatsbibliothek zu Berlin: Digitised Collections
2
University of Vienna: Phaidra
2
Freie Universität Berlin: Refubium (FU Berlin)
1
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
1
HELDA – University of Helsinki Open Repository
1
Heidelberg University Library: Heidelberg historic literature - digitized
1
Share it - Open Access und Forschungsdaten-Repositorium der Hochschulbibliotheken in Sachsen-Anhalt
1
University of Münster: Digital Collections
1